Conveyer system



L. A. GRIFFIN.

coNvEYEH SYSTEM.

APPLICATION FILED JAN. 28,19I8.

1,804,763. PatentedA MM2?, 1919.

W 55@ r EZ/@wf UNITED sfr-Aras" PATENT onmon.

LORNE A. GRIFFIN, or RvANsToN, ILLINOIS, AssIGNOR TO AMERICAN STEAM cONvRYOR CORPORATION, or CHICAGO, ILLINOIS, AV CORPORATION or NEW YORK.

cONvE'YER SYSTEM.

Specification of Letters Patent. l Patented 17919.

Application led January 28, 192'l8. Serial No. 214,077. l

T0 all whom t may concern: Y

Be it lmown that I, LORNE A. GRIFFIN, a citizen of the United States, residing at Evanston, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Conveyer Systems, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification. Y

This invention relates to conveyer sys tems and is especially concerned with conveyer systems of that type in which steam or pneumatic pressure is utilized for forcing or conveying the material to be transported through a conduit. VF or the purpose of convenience I will illustrate and describe my invention as applied to a conveyer system of this type designed to transport ashes, but it is to be understood that my invention is not limited to this use but may be used in connection with similar conveyer systems for transporting 'other materials having y'an abrasive action upon the interior of the conduits through which they pass.V

The object of my invention is to provide means to be placed at points in conveyer systems of the type above referred to at which the direction of flow of the material being conveyed is changed to receive the impact of the material, the said means being so constructedv as to trap and hold a portion of the material being conveyed directly in the path of the material so that the scouring or abrasive action falls upon the trapped material, thereby preventing the walls of the conduit from being abraded and worn through at the points where the direction of flow of the material is altered.

A further object of my invention is to provide means of the character described above of such construction that those portions which are subject to wear can be readily removed and replaced by new members.

Other objects, adaptabilities and capabilities will appear as the description progresses, reference being had to accompanying drawings in which,

Figure 1 is a vertical longitudinal section through an ash receiving receptacle, which is shown more or less conventionally, showing one position in which my improved baiie member can be employed;

Fig. 2 is a front elevation of my improved baliie member and Figi 3 is a central longitudinal `section therethrough. l v

lSimilar characters of Areference refer to similar parts'throughout the Vseveral views.

Referring to the drawings, the reference character l indicates a rectangular frame member one end of which is provided with a laterally extending flange 2 which extends entirely around lthe frame member, 'and is provided with openings 3 by means of which the-baiiie member can' be supported in any desired position. The frame memberrlV is also 'provided with an apertured lug 4c which can also beV employed for supporting the baffle member. A back or impact plate 5 is secured to the side of the frame member opposite the -iange 2 by means of bolts 6, or other similar means, which extend through the registering lugs 7 and'8 formed upon the back plate and frame member respectively. .As shown in Fig-l, my'improved baliie plate is supported from the receptacle@ directly in the pathV of the ashes issuing from the conveyer discharge pipe l0 in such a manner that the `ashes Varey discharged diL rectly into the opening in the frame member. It will be clear that if I should merely attempt to use a frame member such as that described 'abovev for trapping and holding a portion of the ashes in such a position as to receive the impact of the succeeding ashes the upper part of the back or impact plate 5 would very klikely be continually exposed to the scouring action of the ashes unless the depth of the frame member l should be made very considerable. This is due to the fact that 'ashes or other similar granular material have a definite angle of reposedepending upon the degree of fineness of the ashes or other material, their moisture content, and other characteristics, and that colisequently the front surface of the ashes trapped in the frame member 1 would be inclined upwardly and rearwardly toward the plate 5 and, as stated above, unless the frame member 1 had considerable depth the upper portions of the back plate 5 would be exposed to the scouring action of the ashes. In order to prevent this scouring action on the upper end of the plate 5 and at member l comparatively small, I provide a grate member 1l which comprises a plurality of spaced portions l2 which cross each other at an angle and are integrally formed. One of the portions l2 has a laterally projecting lug 13 at its inner side which is provided with an aperture for receiving a bolt 14 which passes through a registering laperture in the back plate 5. This bolt and nut 15 secure the grate member to the back plate 5. This grate member lprovides `a plurality of cells of comparatively small cross sectional area which receive the ashes and hold them in the path of the ashes discharged from the pipe l0, and since the height of these cells is comparatively small the distance of the surfaces of the ashes at the top of each cell from the end of the cell will be comparatively small and the back plate 5 will, therefore, always be covered with a comparatively thin layer of ashes which will protect it from the abrasive action of the ashes issuing from the pipe 10.

In the course of time the front edges of the ribs l2 will be worn orf by the abrasive action of the ashes and unless the grate member 1l is replaced in time the back plate 5 will also be worn through. By providing the bolted connections between the grate member l1 and the back plate 5 and between the latter element and the frame member l I provide means whereby either or both of these elements may be quickly and easily replaced.

lVhile I have described and will claim my invention in combination with `an ash 4conveyer system it is to be understood that my invention is not limited to this use, but can 'be employed in any-pneumatic or steam conveyer system utilized for handling other abrasive material such as ashes, sand, grain, etc., and it is to be further understood that my improved baliie plate may be used at other points in an ash conveyer system than that illustrated in the accompanying drawings. As a matter of fact, it can be used at any point in an ash conveyer system where itis desired to change the direction of flow of the material passing therethrough. I

Vpreferably form the various parts of my improved b'aiile member from cast iron, butI it can be made from any other suitable material.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

An impact plate for ash conveying systems comprising a frame member having a back, a grate member secured in said frame member in front of said back, said grate member comprising a plurality of cross bars decreasing in thickness from their rear edges to their front edges, to provide a plurality of open cells for receiving ashes, the cells diminishing in cross section toward said back, the rear ends of said cells being closed by said back.

In witness whereof, I hereunto subscribe my name this 28 day of January, A. D. 1918.

LORNE A. GRIFFIN.

Witnesses:

A. L. CURREY, J. B. SWIFT.

' Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,A

Washington, D'. C. 

